Board Thread:General Discussion/@comment-31292193-20170322215318/@comment-31444866-20170507111328

Here's one: Clefable

Nature: Modest will do

Moveset: Cosmic Power / Calm Mind(this one's better) Stored Power Moonblast Minimize

Begin using Minimize thrice. Then use Calm Mind. If the pokemon is a Dragon, Dark, or Fighting type sent out first, use Moonblast. If it's another typing(except Psychic, Ghost and Dark types) sent out first, use Stored Power to get the OHKO.
 * If it fails, move on to Calm Mind
 * If it fails, move to Minimize instead